forked from hashicorp/terraform-provider-aws
-
Notifications
You must be signed in to change notification settings - Fork 0
/
resource_aws_cloudwatch_event_permission.go
227 lines (192 loc) · 7.87 KB
/
resource_aws_cloudwatch_event_permission.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
package aws
import (
"encoding/json"
"fmt"
"log"
"regexp"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/arn"
events "github.com/aws/aws-sdk-go/service/cloudwatchevents"
"github.com/hashicorp/terraform/helper/resource"
"github.com/hashicorp/terraform/helper/schema"
)
func resourceAwsCloudWatchEventPermission() *schema.Resource {
return &schema.Resource{
Create: resourceAwsCloudWatchEventPermissionCreate,
Read: resourceAwsCloudWatchEventPermissionRead,
Update: resourceAwsCloudWatchEventPermissionUpdate,
Delete: resourceAwsCloudWatchEventPermissionDelete,
Importer: &schema.ResourceImporter{
State: schema.ImportStatePassthrough,
},
Schema: map[string]*schema.Schema{
"action": {
Type: schema.TypeString,
Optional: true,
Default: "events:PutEvents",
ValidateFunc: validateCloudWatchEventPermissionAction,
},
"principal": {
Type: schema.TypeString,
Required: true,
ValidateFunc: validateCloudWatchEventPermissionPrincipal,
},
"statement_id": {
Type: schema.TypeString,
Required: true,
ForceNew: true,
ValidateFunc: validateCloudWatchEventPermissionStatementID,
},
},
}
}
func resourceAwsCloudWatchEventPermissionCreate(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).cloudwatcheventsconn
statementID := d.Get("statement_id").(string)
input := events.PutPermissionInput{
Action: aws.String(d.Get("action").(string)),
Principal: aws.String(d.Get("principal").(string)),
StatementId: aws.String(statementID),
}
log.Printf("[DEBUG] Creating CloudWatch Events permission: %s", input)
_, err := conn.PutPermission(&input)
if err != nil {
return fmt.Errorf("Creating CloudWatch Events permission failed: %s", err.Error())
}
d.SetId(statementID)
return resourceAwsCloudWatchEventPermissionRead(d, meta)
}
// See also: https://docs.aws.amazon.com/AmazonCloudWatchEvents/latest/APIReference/API_DescribeEventBus.html
func resourceAwsCloudWatchEventPermissionRead(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).cloudwatcheventsconn
input := events.DescribeEventBusInput{}
var policyDoc CloudWatchEventPermissionPolicyDoc
var policyStatement *CloudWatchEventPermissionPolicyStatement
// Especially with concurrent PutPermission calls there can be a slight delay
err := resource.Retry(1*time.Minute, func() *resource.RetryError {
log.Printf("[DEBUG] Reading CloudWatch Events bus: %s", input)
debo, err := conn.DescribeEventBus(&input)
if err != nil {
return resource.NonRetryableError(fmt.Errorf("Reading CloudWatch Events permission '%s' failed: %s", d.Id(), err.Error()))
}
if debo.Policy == nil {
return resource.RetryableError(fmt.Errorf("CloudWatch Events permission %q not found", d.Id()))
}
err = json.Unmarshal([]byte(*debo.Policy), &policyDoc)
if err != nil {
return resource.NonRetryableError(fmt.Errorf("Reading CloudWatch Events permission '%s' failed: %s", d.Id(), err.Error()))
}
policyStatement, err = findCloudWatchEventPermissionPolicyStatementByID(&policyDoc, d.Id())
return resource.RetryableError(err)
})
if err != nil {
// Missing statement inside valid policy
if nfErr, ok := err.(*resource.NotFoundError); ok {
log.Printf("[WARN] %s", nfErr)
d.SetId("")
return nil
}
return err
}
d.Set("action", policyStatement.Action)
principalString, ok := policyStatement.Principal.(string)
if ok && (principalString == "*") {
d.Set("principal", "*")
} else {
principalMap := policyStatement.Principal.(map[string]interface{})
policyARN, err := arn.Parse(principalMap["AWS"].(string))
if err != nil {
return fmt.Errorf("Reading CloudWatch Events permission '%s' failed: %s", d.Id(), err.Error())
}
d.Set("principal", policyARN.AccountID)
}
d.Set("statement_id", policyStatement.Sid)
return nil
}
func resourceAwsCloudWatchEventPermissionUpdate(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).cloudwatcheventsconn
input := events.PutPermissionInput{
Action: aws.String(d.Get("action").(string)),
Principal: aws.String(d.Get("principal").(string)),
StatementId: aws.String(d.Get("statement_id").(string)),
}
log.Printf("[DEBUG] Update CloudWatch Events permission: %s", input)
_, err := conn.PutPermission(&input)
if err != nil {
return fmt.Errorf("Updating CloudWatch Events permission '%s' failed: %s", d.Id(), err.Error())
}
return resourceAwsCloudWatchEventPermissionRead(d, meta)
}
func resourceAwsCloudWatchEventPermissionDelete(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).cloudwatcheventsconn
input := events.RemovePermissionInput{
StatementId: aws.String(d.Id()),
}
log.Printf("[DEBUG] Delete CloudWatch Events permission: %s", input)
_, err := conn.RemovePermission(&input)
if err != nil {
return fmt.Errorf("Deleting CloudWatch Events permission '%s' failed: %s", d.Id(), err.Error())
}
return nil
}
// https://docs.aws.amazon.com/AmazonCloudWatchEvents/latest/APIReference/API_PutPermission.html#API_PutPermission_RequestParameters
func validateCloudWatchEventPermissionAction(v interface{}, k string) (ws []string, es []error) {
value := v.(string)
if (len(value) < 1) || (len(value) > 64) {
es = append(es, fmt.Errorf("%q must be between 1 and 64 characters", k))
}
if !regexp.MustCompile(`^events:[a-zA-Z]+$`).MatchString(value) {
es = append(es, fmt.Errorf("%q must be: events: followed by one or more alphabetic characters", k))
}
return
}
// https://docs.aws.amazon.com/AmazonCloudWatchEvents/latest/APIReference/API_PutPermission.html#API_PutPermission_RequestParameters
func validateCloudWatchEventPermissionPrincipal(v interface{}, k string) (ws []string, es []error) {
value := v.(string)
if !regexp.MustCompile(`^(\d{12}|\*)$`).MatchString(value) {
es = append(es, fmt.Errorf("%q must be * or a 12 digit AWS account ID", k))
}
return
}
// https://docs.aws.amazon.com/AmazonCloudWatchEvents/latest/APIReference/API_PutPermission.html#API_PutPermission_RequestParameters
func validateCloudWatchEventPermissionStatementID(v interface{}, k string) (ws []string, es []error) {
value := v.(string)
if (len(value) < 1) || (len(value) > 64) {
es = append(es, fmt.Errorf("%q must be between 1 and 64 characters", k))
}
if !regexp.MustCompile(`^[a-zA-Z0-9-_]+$`).MatchString(value) {
es = append(es, fmt.Errorf("%q must be one or more alphanumeric, hyphen, or underscore characters", k))
}
return
}
// CloudWatchEventPermissionPolicyDoc represents the Policy attribute of DescribeEventBus
// See also: https://docs.aws.amazon.com/AmazonCloudWatchEvents/latest/APIReference/API_DescribeEventBus.html
type CloudWatchEventPermissionPolicyDoc struct {
Version string
ID string `json:"Id,omitempty"`
Statements []CloudWatchEventPermissionPolicyStatement `json:"Statement"`
}
// CloudWatchEventPermissionPolicyStatement represents the Statement attribute of CloudWatchEventPermissionPolicyDoc
// See also: https://docs.aws.amazon.com/AmazonCloudWatchEvents/latest/APIReference/API_DescribeEventBus.html
type CloudWatchEventPermissionPolicyStatement struct {
Sid string
Effect string
Action string
Principal interface{} // "*" or {"AWS": "arn:aws:iam::111111111111:root"}
Resource string
}
func findCloudWatchEventPermissionPolicyStatementByID(policy *CloudWatchEventPermissionPolicyDoc, id string) (
*CloudWatchEventPermissionPolicyStatement, error) {
log.Printf("[DEBUG] Received %d statements in CloudWatch Events permission policy: %s", len(policy.Statements), policy.Statements)
for _, statement := range policy.Statements {
if statement.Sid == id {
return &statement, nil
}
}
return nil, &resource.NotFoundError{
LastRequest: id,
LastResponse: policy,
Message: fmt.Sprintf("Failed to find statement %q in CloudWatch Events permission policy:\n%s", id, policy.Statements),
}
}